/*
 * Copyright (C) 2000-2008 Jens Nixdorf and various contributors
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to
 * deal in the Software without restriction, including without limitation the
 * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
 * sell copies of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in
 * all copies of the Software, its documentation and marketing & publicity
 * materials, and acknowledgment shall be given in the documentation, materials
 * and software packages that this Software was used.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
 * THE AUTHORS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
 * IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 */
package org.mopore.jat.board;

import java.awt.AlphaComposite;
import java.awt.Color;
import java.awt.Composite;
import java.awt.Graphics2D;

public class CutoutPainter {

    private Composite alphaComposite;

    private final Color cutoutColor;

    private float alphaBase = .15f;

    private final float fadingSteps = 8;

    private float fadingIndex = fadingSteps;

    private boolean finished;

    public CutoutPainter(Color markingColor) {

        cutoutColor = markingColor;
        alphaComposite = AlphaComposite.getInstance(AlphaComposite.SRC_OVER, alphaBase);
        finished = false;
    }

    public void paintCutout(final Graphics2D g, final Composite origComposite, final Cutout cutout) {

        int x = cutout.getX();
        int y = cutout.getY();
        int width = cutout.getWidth();
        int height = cutout.getHeight();
        g.setColor(cutoutColor);

        if (cutout.isCreated()) {
            if (fadingIndex > 0) {
                float newAlpha = (fadingIndex / fadingSteps) * alphaBase;
                alphaComposite = AlphaComposite.getInstance(AlphaComposite.SRC_OVER, newAlpha);
                if (fadingIndex <= 2) {
                    fadingIndex = fadingIndex - 0.25f;
                } else {
                    fadingIndex = fadingIndex - 1f;
                }
            } else {
                finished = true;
            }
        }

        g.setComposite(alphaComposite);
        g.fillRect(x, y, width, height);
        g.setColor(Color.BLACK);
        g.drawRect(x, y, width, height);
        g.setComposite(origComposite);
    }

    public boolean isFinished() {
        return finished;
    }

}
